Tried out serial communication b/w PC (Windows 7 using hterm) and notebook (Fedora 23 using bash+stty).
Could get data from notebook to PC but not vice versa. Reading from /dev/ttyUSB0 just would not show any received data.
Tried out all combinations of parity bits, stop bits.
Turns out all data arrived but LF was missing, so nothing was displayed in the shell….
That’s one wasted afternoon.